[MAN] SDL_SemPost

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SDL_SemPost

Section: SDL API Reference (3)
Updated: Tue 11 Sep 2001, 23:00
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NAME

SDL_SemPost - Unlock a semaphore.  

SYNOPSIS

#include "SDL.h" #include "SDL_thread.h"

int SDL_SemPost(SDL_sem *sem);  

DESCRIPTION

SDL_SemPost unlocks the semaphore pointed to by sem and atomically increments the semaphores value. Threads that were blocking on the semaphore may be scheduled after this call succeeds.

SDL_SemPost should be called after a semaphore is locked by a successful call to SDL_SemWait, SDL_SemTryWait or SDL_SemWaitTimeout.  

RETURN VALUE

Returns 0 if successful or -1 if there was an error (leaving the semaphore unchanged).  

EXAMPLES

SDL_SemPost(my_sem);

 

SEE ALSO

SDL_CreateSemaphore, SDL_DestroySemaphore, SDL_SemWait, SDL_SemTryWait, SDL_SemWaitTimeout, SDL_SemValue

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

EXAMPLES

SEE ALSO

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